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07-06-2017
Mathematics

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Which of the following is the reciprocal of: x2 - 2x - 8 A. (x + 2)(x - 4) B. 1 (x + 2) C. 1 (x + 2)(x - 4) D. 1 (x - 8)

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Аноним Аноним

07-06-2017

x^2 - 2x - 8 = (x + 2)(x - 4)
reciprocal of x^2 - 2x - 8 = 1 / [(x + 2)(x - 4)]

answer is C. 1 / [ (x + 2)(x - 4) ]

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